Computer Programming MCQs

5739 MCQs  (Page 233 of 574)

Attempt Computer Programming MCQs Quiz
Which of the following amplifier circuit using junction transistor has the best gain?
A. Common base
B. Common emitter
C. Common collector
D. All have the same gain
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MOSFET can be used as a__________?
A. Current controlled capacitor
B. Voltage controlled capacitor
C. Current controlled inductor
D. Voltage controlled inductors
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A differential amplifier has a differential gain of 20,000 . CMRR=80 dB. The common mode gain is given by________?
A. 2
B. 1
C. 1/2
D. 0
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In a common emitter, unbypassed resister provides___________?
A. Voltage shunt feedback
B. Current series feedback
C. Negative voltage feedback
D. Positive current feedback
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. If =0.98 ,Ico=6µA and Iβ=100µA for a transistor,then the value of Ic will be______?
A. 2.3ma
B. 3.2ma
C. 4.6 ma
D. 5.2ma
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The MOSFET switch in its on-state may be considered equivalent to_____________?
A. Resistor
B. Inductor
C. Capacitor
D. Battery
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An npn BJT has gm=38mA/v, cµ =10¯14 F, cπ =10¯13F and DC current gain β0=90.For this transistor fT & fβ are________?
A. Ft =1.64 x 108 hz & fβ = 1.47 x 1010 hz.
B. Ft =1.47 x 1010 hz & fβ = 1.64 x 108 hz
C. Ft =1.33 x 1012 hz & fβ = 1.47 x 1010 hz
D. Ft =1.47 x 1010 hz & fβ = 1.33 x 1012 hz
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An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?
A. 795mv
B. 395mv
C. 795 mv
D. 39.5mv
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Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?
A. 49db
B. 51db
C. 98db
D. 102db
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The cascade amplifier is a multistage configuration of__________?
A. Cc-cb .
B. Ce-cb
C. Cb-cc
D. Ce-cc
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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